Hi, I am executing a huge report in SSRS 2008, after some time the report doesn't renders and there is an error icon at the left bottom of the web page. When I click open it to see the details, it gives following error; Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 12029. Any help on this will be appreciated. Regards.

A quick search on this error yielded a discussion of Network connections dropping. Could it be that the network was lost? One thing you should check is whether there are connection timeouts which are affecting the connection between client and server... Hope this helps, -LukaszGot a bug or feature request? Tell me about it at http://connect.microsoft.com. This posting is provided "AS IS" with no warranties, and confers no rights.

A quick search on this error yielded a discussion of Network connections dropping. Could it be that the network was lost? One thing you should check is whether there are connection timeouts which are affecting the connection between client and server... Hope this helps, -Lukasz Got a bug or feature request? Tell me about it at http://connect.microsoft.com. This posting is provided "AS IS" with no warranties, and confers no rights. I increased the connection time out in my source database and now I can even generate the reports with 4 to 5 million records.

Sach, I'm too facing similar kind of problem. Can you let me know from where & how did you increased the connection time out in the source database? Plus does it have any negative effect on database/report performance if increase this parameter?? -Thanks